metal / plastic cement / metal drip edge / metal sheeting / electricity / asphalt lap cement / /
Organization
Institute of Roofing and Waterproofing Consultants / Institute for Business and Home Safety / National Roofing Contractors Association / Rockville / Asphalt Roofing Manufacturers Association / Rosemont / /
Person
Matthew Hitlin / Philip Dregger / Thomas L. Smith / Rockville / Russell Snyder / Asphalt Roofing / / /
Position
local building inspector / General Manager / Research Director / /